MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2dfd3a8503f4bb34c6c2c387e3429152689e138aec70f2399ca6b937e5ddc076. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


SilentBuilder


Vendor detections: 13


Maldoc score: 5


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2dfd3a8503f4bb34c6c2c387e3429152689e138aec70f2399ca6b937e5ddc076
SHA3-384 hash: cfe29f29591b096e920ad5cde0aecb517bd807d39963592217d08728dc956f5ab4cd65e2b7011e8f750f0fcc616d562f
SHA1 hash: 9215e7ce10bbe484ee524e5669182e271422375d
MD5 hash: a25ea46bcbf1c2531fd840335a4a23c9
humanhash: blossom-carpet-east-edward
File name:2026P-2801.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:92'651 bytes
First seen:2022-01-28 11:29:51 UTC
Last seen:2022-01-28 13:45:08 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:8xIk3hbdlylKsgqopeJBWhZFGkE+cL2NdA/6yH5Eb7EdrpFkkGX/sGC6ORQQDBh+:8Sk3hbdlylKsgqopeJBWhZFGkE+cL2Nx
TLSH T137934B1BA98648C5E66D47F4E0625AE9BE63EF45FA433ED321107FC63AB41434C0B17A
Reporter lowmal3
Tags:SilentBuilder xls

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 5
OLE dump

MalwareBazaar was able to identify 3 sections in this file using oledump:

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
381211 bytesWorkbook
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
AutoExecAuto_OpenRuns when the Excel Workbook is opened
IOC91.240.118.172IPv4 address
SuspiciousEXECMay run an executable file or a system
SuspiciousXLM macroXLM macro found. It may contain malicious code

Intelligence

File Origin
# of uploads :
2
# of downloads :
195
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2026P-2801.xls
Verdict:
Malicious activity
Analysis date:
2022-01-28 11:32:22 UTC
Tags:
macros macros40 emotet-doc emotet opendir loader
Link:
https://app.any.run/tasks/ff6df621-c4cd-476d-a4fe-7b581a5340a8

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/225012/
Detection(s):
TwinWave.EvilDoc.Excel4DragoTrainingMontage.20210204.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XLSLOLBINHammerToFall.20201218.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4MDottedQuadDancingInHeaven.20210421.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Emotet46and2.20220124.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Searching for the window
Launching cmd.exe command interpreter
Launching a process
Sending an HTTP GET request
Creating a file
Running batch commands
Running batch commands by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/2dfd3a8503f4bb34c6c2c387e3429152689e138aec70f2399ca6b937e5ddc076/results/dashboard
Payload URLs
URL
File name
http://91.240.118.172/ee/ss/se.html
Macro3
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd cmd.exe macros macros-on-open stripped
Link:
https://www.filescan.io/uploads/61f3d3c66a7929f66a1f40f3/reports/e7a03f4c-41d8-4293-845e-f805bd4b313c/overview
Label:
Benign
Suspicious Score:
3.7/10
Score Malicious:
38%
Score Benign:
62%
Link:
https://www.malware.ai/gui/files/?id=5be02e7d-e69c-4727-900c-6c396eeb3f9a
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/2dfd3a8503f4bb34c6c2c387e3429152689e138aec70f2399ca6b937e5ddc076
Details
Excel 4.0 Macro
Document contains Excel 4.0 macros (XLM). A valid, albeit dated feature, this document should be treated with suspicion.
IPv4 Dotted Quad URL
A URL was detected referencing a direct IP address, as opposed to a domain name.
Macro Execution Coercion
Detected a document that appears to social engineer the user into activating embedded logic.
MSHTA Pivot
Macro may contain a pivot to an external URL resource via MSHTA.
Autostarting Excel Macro Sheet
Excel contains Macrosheet logic that will trigger automatically upon document open.
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
Hidden Macro 4.0 Emotet
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/929619
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Document contains OLE streams with names of living off the land binaries
Document exploit detected (process start blacklist hit)
Found Excel 4.0 Macro with suspicious formulas
Found malicious Excel 4.0 Macro
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Machine Learning detection for dropped file
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Passes commands via pipe to a shell (likely to bypass AV or HIPS)
Powershell drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: MSHTA Spawning Windows Shell
Sigma detected: Suspicious MSHTA Process Patterns
Sigma detected: Suspicious PowerShell Command Line
Sigma detected: Windows Shell File Write to Suspicious Folder
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Yara detected Emotet
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 562097 Sample: 2026P-2801.xls Startdate: 28/01/2022 Architecture: WINDOWS Score: 100 54 210.57.209.142 UNAIR-AS-IDUniversitasAirlanggaID Indonesia 2->54 56 118.98.72.86 TELKOMNET-AS-APPTTelekomunikasiIndonesiaID Indonesia 2->56 58 30 other IPs or domains 2->58 68 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->68 70 Found malware configuration 2->70 72 Antivirus detection for URL or domain 2->72 74 16 other signatures 2->74 15 EXCEL.EXE 53 12 2->15         started        signatures3 process4 file5 50 C:\Users\user\Desktop\2026P-2801.xls, Composite 15->50 dropped 64 Passes commands via pipe to a shell (likely to bypass AV or HIPS) 15->64 19 cmd.exe 15->19         started        signatures6 process7 process8 21 cmd.exe 19->21         started        23 cmd.exe 19->23         started        process9 25 mshta.exe 11 21->25         started        28 rundll32.exe 21->28         started        dnsIp10 60 91.240.118.172, 49167, 49168, 80 GLOBALLAYERNL unknown 25->60 30 powershell.exe 12 7 25->30         started        process11 dnsIp12 62 tamiladsense.com 136.0.111.15, 49169, 80 AS40676US United States 30->62 52 C:\ProgramData\Milossd.dll, PE32 30->52 dropped 66 Powershell drops PE file 30->66 35 cmd.exe 30->35         started        file13 signatures14 process15 process16 37 rundll32.exe 35->37         started        process17 39 rundll32.exe 1 37->39         started        file18 48 C:\Windows\SysWOW64\...\wcdrvdvu.aav (copy), PE32 39->48 dropped 76 Hides that the sample has been downloaded from the Internet (zone.identifier) 39->76 43 rundll32.exe 39->43         started        signatures19 process20 process21 45 rundll32.exe 1 43->45         started        signatures22 78 Hides that the sample has been downloaded from the Internet (zone.identifier) 45->78
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2dfd3a8503f4bb34c6c2c387e3429152689e138aec70f2399ca6b937e5ddc076/
Threat name:
Document-Excel.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2022-01-28 11:30:12 UTC
File Type:
Document
Extracted files:
7
AV detection:
5 of 43 (11.63%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fx6tvbid6s5tjrwcyod6gqurkjuj4e4k5rypeom4u24tpzo5yb3a._file
Result
Malware family:
emotet
Create hunting rule
Score:
  10/10
Tags:
family:emotet botnet:epoch5 banker macro suricata trojan xlm
Link:
https://tria.ge/reports/220128-nl61aabgar/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in System32 directory
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Emotet
Process spawned unexpected child process
suricata: ET MALWARE W32/Emotet CnC Beacon 3
Malware Config
C2 Extraction:
159.69.43.124:8080
45.79.80.198:443
207.148.81.119:8080
128.199.192.135:8080
118.98.72.86:443
217.182.143.207:443
168.197.250.14:80
116.124.128.206:8080
78.46.73.125:443
185.148.168.15:8080
195.154.146.35:443
85.214.67.203:8080
194.9.172.107:8080
59.148.253.194:443
210.57.209.142:8080
54.38.242.185:443
195.77.239.39:8080
159.69.237.188:443
104.131.62.48:8080
62.171.178.147:8080
142.4.219.173:8080
66.42.57.149:443
78.47.204.80:443
190.90.233.66:443
54.37.228.122:443
185.168.130.138:443
191.252.103.16:80
37.59.209.141:8080
185.148.168.220:8080
37.44.244.177:8080
203.153.216.46:443
45.13.132.26:8080
Dropper Extraction:
http://91.240.118.172/ee/ss/se.html
http://91.240.118.172/ee/ss/se.png
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/2dfd3a8503f4bb34c6c2c387e3429152689e138aec70f2399ca6b937e5ddc076

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:Excel_Hidden_Macro_Sheet
Create hunting rule
Rule name:SUSP_Excel4Macro_AutoOpen
Create hunting rule
Author:John Lambert @JohnLaTwC
Description:Detects Excel4 macro use with auto open / close

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

SilentBuilder

Excel file xls 2dfd3a8503f4bb34c6c2c387e3429152689e138aec70f2399ca6b937e5ddc076

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/225012/

Comments